Learn all about equations of parallel and perpendicular
4328_Writing_equations_of_perpendicular_lines_example_2_.html
4325_Parallel_lines_from_equation_example_3_.html
4326_Perpendicular_lines_from_equation.html
4330_Proof_perpendicular_lines_have_negative_reciprocal_slope.html
4324_Parallel_lines_from_equation_example_2_.html
4323_Parallel_lines_from_equation.html
All video content by Khan Academy is under their license: CC by NC SA
Website created using Khan Academy Static Downloader